Home / 434,438.80-651,658.20-419,923.60

Finding the Fourth Proportional to 434,438.80, 651,658.20 and 419,923.60

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Solution

The fourth proportional to 434,438.80, 651,658.20 and 419,923.60 is: 629,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,438.80 : 651,658.20 = 419,923.60 : x
  2. Step 2: Convert to fraction form
    434,438.80/651,658.20 = 419,923.60/x
  3. Step 3: Cross multiply
    434,438.80x = 651,658.20 × 419,923.60
  4. Step 4: Simplify right side
    434,438.80x = 273,646,657,313.52
  5. Step 5: Solve for x
    x = 273,646,657,313.52/434,438.80
  6. Step 6: Final answer
    x = 629,885.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.